According to a press release issued by the band’s publicists, the heavy metal legend has been diagnosed with “the early stages” of the disease, a form of cancer which affects white blood cells, and he “is currently working with his doctors to establish the best treatment plan.”

Last November it was announced that the original Black Sabbath lineup – Iommi, frontman Ozzy Osbourne, bassist Geezer Butler, and drummer Bill Ward – were reuniting to record their first studio album together since 1978’s Never Say Die!.

According to the statement, Iommi’s illness has not derailed that plan, although work on the Rick Rubin-produced CD will now continue in the U.K., rather than Los Angeles. The collection is set for release this fall.